Reversible seat or chair



c. R, HULTGREN 1,808,659 lREVERSIBLE SAT OR CHAIR Filed nec. 1o. 1928 2 sheets-sheet 1 June 2,l 1931-.

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June 2, 1931- c. R. HULTGREN 1,808,559

` REVERSIBLE SEAT QR CHAIR Filed Dec. 1o, 192e 2 sheets-sheet 2 @j Zarka/@gaf fij, l ff Patented June 2, 1931 i UNITED., STATES,,PAITENTOFRICE g.

CHARLES R. HULTGREN, OF CHICAGO, ILLINOIS, ASSIGNOR "To s. KARPEN& 1BROS.,-OF

CHICAGO, ILLINOIS, A'CORPORA'IIONOF WEST VIRGINIA y REVERSIBLE SEATi OR CHAIR This invention relates particularly to a type of chair construction conveniently adapted for use in a railway coach, for example,`

mary object is to provide an improved struc-fV ture of such character as to enable the chair (for example, a double seat) to be reversed, or otherwise positioned, with facility. p

The invention is illustrated in the accompanying drawings, in which Fig. l is a side elevational View of the chair; Fig. 2, a detailed section taken on the line 2 of Fig. 1, showing the mechanism connecting the base to the seat structure; Fig. 3, a detail showing the position taken by the connecting mechanism when the chair is turned in a clockwise direction 90 degrees from the position shown in Fig. 2; Fig. 4, a detail taken on line 1 -4 of Fig. 2, showing the shifting mechanism; Fig. 5, a detail taken on line 5 of Fig. 2, showing the lower portion of the` seat post and the guide mechanism cO-operating therewith; Fig. 6, an enlarged section through the base showing a modified formof shifting mechanism; Fig. 7 a detail taken on line 7-7 of Fig. 6, showing a plan of the shifting mechanism, and Fig. 8, a detail showing a second modified form .of shifting mechanism, the `section being taken upon a plane corresponding to that of Fig. 4. y

The chair comprises a base 1, a seat portion 2 surmounting the base, aback 3, and

side arms 4. The seat may be of any desired construction. For purposes of illustration theordinary double seat commonly used in passenger coaches will be taken as a typical example of a convenient application of the novel type of connecting mechanism.

The base of the chair comprises a top wall 11, which may be of heavy sheet metal construction; an inner wall 12 spaced below the top wall; anda perimetral wall 13, the base portion of which is flared outwardlyat'lft to provide a bearing flange which may be se-V cured to the floor by screws passing through the perforations 15. The wall 13 may be struck inwardly at 13a, and inner plate l12 which is inserted from the open bottom end 59 of the base, isspot-'welded Vas shown at 16,.

` l The base `portion of the seatstructurev` providedwith apair 4oif kdiagonal cross arms.: 5,V secured to theV seat 4structure by means of the screws 6.V If desired,a solidplate .may be used instead of this cross 'armtype of base plate construction. i The seatstructure is pivotally mounted on the base by means of the post or depending stud 7 which is connected to the .baseportion of the seat Aiframe through the medium of akey 8 and adisk member-:9. Y The disk 9 issecured bythe'rivets 10.to the cross-bars 5. l 'Y f To permit .turning of the chair, Yit is neces-` sary' to provide/forashifting ,of the seat structure on the base to afiorda clearance be-y tween `the corners of ythe seatand` the side wall of the car. For -eXample,.in the position of the chair shownin Fig. 1, assumingthe chairis facing the front of thek car, and the side wall of the car is adjacent the left end of thevseat, it will be apparent that in turning "the seat in a clockwise direction the rear left cornerA of the seat will strike the side wallv of the `car the seat structure' cannotshift on the, base towards "thev centeraisle of the car., f. H

. To provide` for this shifting movement of. the seat structure upon thebase, I providel inl the plate 12 a cam slot 17, into whichV depends a roller 18 carried onlthe'endfof a. throw arm 19. which is, in turn, keyed to `thepost 7.

Each of the plates 11 and 12 is provided with l a guide slot, the slot in plate llbeing shown at 2O andY that Vin plate 12 at21. f These slots are in vertical alignment withfeach Yother .and extend `parallel tothe long axis of4 thegseat. As the seatis turn-edv inaclockwise direction romthe position 4shown in Fig. 1, the rollerV 18 moves along clam s101317, throwing the post 7 laterally alongtheV guide' slots 20` and 21 in the plates 11 and 12, respectively. Itwill be clear from Figs.` 2and' 4 that guide slots 20.'and '21 are in. axial alignment with the direction of lateral movement-of post l7, .and that camv slot 17. atright'angles,.thereto. Hence` during the turning operation the ,seat p is free to shiftlaterallyawayfromthecar wall.

It is ,desirableto mechanism seat structure'upon the. base, and which will also retain the same in locked position in either the forward or reversed position. For this purpose I provide a foot treadle 22, pivotally mounted in a yoke 23 which is secured by the stud '24 to a 'cross bar The bar 25V is parallel' itovplates v11 and I2 extendsV` between the sides of the perimetral Wall' of the base.` Theinner end of thetre-adle 22 pivotally connected to a vertical plunger member 26, which is adapted to move vertically through an aperture 27 in 'crossgbar'2/5.v

The top surface of plunger 26 normally engages the bottomV end .off post-f7. Plungz'rV member 26 reoiprocates in a vbushing 26a which screws into the ii-nder side of 13u25; This bushing is vnotched to receive theV which serves as guide V'for thelower eird foi of plniiger member v26 is approximately iatv alongfits leitft edge, 'referred to Fig'. 42, and risesto a tapered "etl'gie'at the ight,"tlius aflfordirg-a surface which conforms in 'ge'iieral outline itornio side 'of the 'curved oi' rounded;

l'ower'end 'of I:post This iupstandiiig Vportion; or tho top serra-oo sorto-S as stop when Y the post, approaches 'the nmrnng `position snows/in Faye. when are limiting 'position Y is reached, the'seat structure may be lowered into fthe f' osition 'shownfin '2 by reinovifng the'ootfromtreadle 22.

motion :into a position '9o degrees fronthat shown in'Fig.' 1, "the post y7 will vhave movedV to the 'lef-t 'to the @positionjshown fin Fig. 3. Wli'enfthe chair "is jturned in `a :clockwise 'directinjthrough an additional 9'() degrees fron-nio 'position shownin Fig. fa, 'post "7 is agtihiimnedi'ately vover the hole 27 in ycross bar 2'5, 'and V'upon Alo'iiverii'rg plunge-'r "member 26 i't lris-f'ree to' Ifallback to nonial position. Y Afajiiiz'iliafry)locking inecharliisni may be pro d infuso oraison so steered to 'o topsvniiiofthoseoo. eorr-osponaiogsookots or holes Stia'anl -SObfdisp'sedat an angle 'of b 5 namens-ery ab-ovev :bloss 30.1 f no 'tho engagement-)with one 'or the fotherof -the socketstofprevetfurthe'r'fturning.' Thelocking action afforded betweenthe lower end foiV post 7 'aiidthe'apetii'ref27 is'pr'obablyzsufiieioaeirnlieoseoasoo.

A heavy coiled spring 3l encircles post 7 between the plates l1 and l2 of the base. The lower end of this spring extends against the throw arm 19 and the upper'end presses against a bearing plate member 32. A series ofxball bearings V83,carriedby plate 32, facilitates turning Vof the seat structure lon the base. The bearing plate 32 is at all times held adjacentthe underside of plate 11 through the action et 'this spring. 'The ball bearings are mounted in a socket container so as not. Y

to fall yout when turned into a position directly below slot 20.

Viren 'the seat st-ructnre is raised by depressing thetrea'dle 22 preparatory to turning',the lower bearing pla'te which lis keyed to post 7, is brought inftofconta'ct with Athe underside of wall l2, 'thereby Iaoi'ding a bearing area which prevents tilting of 'the seat upon the base yduring the turning `operation.

The operation ofthe turning ands'hifti'n'g mechanism is substantially as iollowsgasA suming the seat is in the forward position shown in Fig".` l, the oar 'wallbeing adjacent the left end of Ythe seat, Vlrea'die.22is first` Vandthe/seat depressed to raise pivot'fpost 7 su Jerstructuresecured thereto. Upon forcible turning ofthe seat in a clockwise 'direc` tion, the roller lS'i'olloivs -camfslot 17, which Yin turn, through thro'wa'rm 19, shiffts the post 7 laterally along guide' slots 2O and 21 and guide lgroove 28. A'cle'arance is thus afford# 'ed between fthe seat and the car wall. Alfter a :turiii-ng oi degreesthe `throw varm 19Y will have y'shifted post 7 to the leit'e'nd of When the Ireversed position is reached, that is 180 islots'20 I'and-2l as 'shown in Fig.

degrees froinfthat shown in Fig. 1, 4post ,7' will haveagain Imoved to the right and :into alignment with aperture -2-7. The seat lstructure is then free `'to bev lowered `into "locked position. A repetition off this 'cycle 'in thereverse direction, that is lturn'infg the 'seat in a counterclockwise direction, will restore ther chair to the-"forward positie y Figs. 6 and 7 showa slight modification of the Vthrow arm construction. In this'inodifi'- Vcation rvthe fth'r'ow arm 42 'is actuated by the link 35. One end ofthe link ispivtal'ly-con-LY n'ected 'to the arm 36, which -inturnV is piv otally connected at 37 to throwar'in 42. The

Vother 'end of the vlink is pivot'aliy connected to a yoke Y38 which is rn'ovablyy secured to 2a boss 39Y'on base plate l2. AVVfhen the treadleV ing- 'i the sea-t structure IVAmuch as -infthe in`a"151--V ner already described -in connection witli 1 5; y. l 1 Fig. -8 shows a second modification ofthe 22 is depressed vpost 7 is raised, the rv'arm 42 moving therewith, `Vand-as the seat structurels tu'rned a thrust is imparted through thef'link 35 to the arm 42. Thisoelifectsalateral'shiftpending roller 40 which engages a slot 41 in plate 12. This itorni is very similar to the type shown in Fig. 4, the Vessential dierence being' that the cam slot 41 is not curved or arc-shaped, but extends throughout its length at right angles to the slot 21 to form therewith a T-slot. The operation is similar to that shown in Fig. 4

This invention is a modification of the ini vention shown in my application Serial No.

326,123, filed Dec. 14, 1928, which matured into Patent No. 1,803,063 dated April 28, 1931.

The foregoing detailed description has been given for clearness of understanding f only and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in View of the prior art.

What I regard as new, and desire to secure by Letters Patent, is:

1. In a chair of the character described provided with a base and a seat structure adapt-V ed to turn upon the base, connecting means between the base and seat structure permitf" ting a substantially 180 degree turning of the seat structure upon the base and serving to effect a lateral shifting of the seat relative to the base during said turning, said connecting means including a pivot post secured to the seat structure, a throw-arm mounted to turn with said pivot post,A a roller depending from said throw-arm, and a base plate provided with a cam slot positioned to engage said depending roller.

2. In a chair of the character described provided with a base and a seat structure adapted to turn upon the base, connecting means between the base and said seat structure permitting a substantially 180 degree turning of the seat structure on the base and sei-ving to effect the lateral shifting of the sea-t relative to the base during said turning, said connecting means including a pivot post secured to the seat structure, a throw-armV --'-i mounted to turn with said pivot post, a roller depending from said throw-arm, a base plate provided with a cam slot positioned to ento effect a lateral shifting of the seat in theV operation of turning the same on the base,

and locking means for holding said seat structure against said turning and shifting movements, said locking means comprising a base plate provided with a retaining aperture positioned to engage the lower end of the pivot post, a trea-dle pivoted to the base, and a plunger member carried by said treadle and serving to raise said retaining` aperture.A l i 4. The device as claimed in claim,V 3, krfur-1 ther characterized by i additional locking means positioned'betweenthe top wall ofthe Y base and the base portion` of the lseat 'struc-p ture.` A. A

5. A chairofthe character described comprising a base, saidbase including atop wall previded witha guide slot, an inner wall below and spaced-from the top wall and provided with a guide slot, and a cross-bar mounted below andy parallel tosaidinner wall and provided with a guide groove; a seat structure mounted' upon saidbase; and connecting means between said base and said seat structure permitting shifting and turning of o the seat structure upon the,base,said means including `a pivotpostL secured 'tothe seat `pivot postout of said.

structure and depending through said guide Y slots, the lower end of said postbeing adapted to. engage said guideigroove, and a throw,- arm adapted to reciprocate'said-post along said guide slots and guide groove upongforei-f ble turning of the seat structurethrough'an arc of substantially 180 degrees.

6. A chair of the character described com-` prising a` base, said base including a top wall` provided with a guide slot, an inner `wall below and spaced from the top wall and provided with a guide slot, 'and a cross bar spaced below and parallel to said inner wall and provided. with a lguide groove; a seat 'structureV mounted upon. said base; connecting means between said base and seat structure permitting shifting and turning of the seat structure on the base, said `mean-s including a pivot post secured to the seat structure andV depending .through said guide v slots, the

lower end of said post normally resting in a retaining aperture in said ycross bar,L `and a" tlirow-arm adapted to reciprocate said post along said-guidel slotsand guide groove upon forcible `turning f ofV the seat "str'ucture through anarc of substantiallyflSO degrees gf and locking means for holding tlieseat strncture against said turning and shifting movements, said means including a treadlepivoted tosaid baseand provided withaplung` er member positioned to raise said post into saidguide groove preparatory to turning the seat'on'the'base.V l Y o 7. A chair of the characterfdescribed iconiprising a baise, a seat structure, pivotal connecting means betweenthe baseandsaidseat structure, and means permittingy a substantially 180degree turningof theseat structure upon the base and serving'g-to shift the seat structure laterally. onthe base during said turning, said means comprisingla ltop plateV provided with a .guide slot, an inner plate spaced below said .top plate and provided with a vcam slotand a guide slot in alignment with said first mentioned guide slot, Iand a tii'rowlarm carried bylsaidppivotal connectingmeans 'and provided fat itsrfree.V end with a depending roller adapted :to ride e in Asaidca'rn slot.

8. `a .chair 'of fthe vvcharacter described'; comprising a base, la :seatJ structure mounted upon the ibase, and pivotal connecting means between said base and seat structure; means for shifting said 'structure upon the base fromy a normal central position to alimiting lateral 'position and back to said lcentral position during a halfrevolution of said seat structure', said shifting means comprising aA throw-:arm adapted'toturn withl said pivotal connecting means, val'irorizontal Vplate secured l to the base, said .plate'being provi-ded with a guide :slot axial withthe line Voilateral movement and a camsl'ot positioned at right angles to said guide fsl'0t,-a`nd vaguide member de Ypending l from the free lend-of said throwarm into said cam slot e `-9. A Ychairv of therchara'cter prising a base provided with atop bearing wall' and a lower bearing wall spaced from said top wall, a seat structure mounted upon said base, a pivot post carried by said structure Vand depen-ding into. the base, a throw.-

arm carried lby* said .pivot :post and adapted .y

to reciprocate fthe 'seat 'striicture laterally-on f the base during a half .revolution 'of the samev on the base, a lcross-'bar secured to the ybase below said lower bearingwall landprovidedvv `with a retaining aperture normally holding said pivot -p'ostiin said vlateral movement,

treadle provided with an arm .positionedto raise 'said pivot post from said retaining socket,- a't'op bearing plate'secured to said seat' structure and vnormally engaging said ytop bearing wall, Vand :a bottom Ybearing lplate .fsecured to said vpivot 'post 'and positioned to engage said lower bearing vwall duringg-tlie interval of turning.` v v l 10. Infa! chair .of kthe character 'described comprising-a base, aseat structure 'mounted uponthe base, and-connectingfmeans between v said base andsaid seat structure; means for shifting said seat structure'uponthe baseUv Y from anormal central position fto a limiting e lateral position and back-to saidcentral .posi-4 tion during-a half revolution yoff-said seat Y structure, said shifting vmea-ns comprising throw-arm adapted to move slmnltaneouslywith said connecting meansy-aimeinbersw cured-'to the -base,' said member being provided with `a guide'slot axial lwith Atheline of' lateral movement and Ja' camslot @positioned adjacent one endiofsaid guide slot, and a' y guide-memberextending from rtllie freev "end of said throw-arm into said Camelot In witness whereof-I -havehereunto lsetin'y hand-'this '27th -djaywof November, 1928.y

vCHARLES VR'. 'HULTGrREN.A`

, Y' fc5 described kcomp 

